Finding the Fourth Proportional to 806,498.96, 1,209,923.46 and 245,518.88

Step by Step Solution

1. Step 1: Write the proportion equation
   806,498.96 : 1,209,923.46 = 245,518.88 : x
2. Step 2: Convert to fraction form
   806,498.96/1,209,923.46 = 245,518.88/x
3. Step 3: Cross multiply
   806,498.96x = 1,209,923.46 × 245,518.88
4. Step 4: Simplify right side
   806,498.96x = 297,059,046,735.31
5. Step 5: Solve for x
   x = 297,059,046,735.31/806,498.96
6. Step 6: Final answer
   x = 368,331.60